Ekanite

Thorium is a highly radio active element and due to this element Ekanite is converted to metamict state. In metamict state Ekanite almost acts like amorphous. By applying heat at certain temperature the metamict state of Ekanite can be restored to crystalline state.

The main source for Ekanite is Sri Lanka and Canada.

Ekanite Properties

Chemical Composition:

Calcium Thorium Silicate - ThCa2Si8O20

Classification / Type:

It is a metamict mineral.

Colors / Varieties:

Green, brown (metamict)

Yellow, red (crystalline)

Four rayed star

Crystal System / Forms:

Tetragonal System / Prismatic crystals and water-worn pebbles.

Hardness:

6 - 6.5

Specific Gravity:

3.28

Cleavage / Fracture:

None / Conchoidal.

Optic Character:

Anisotropic, D.R.; Uniaxial negative. Is almost amorphous and appears Isotropic (S.R.) due to metamict state.